Is there a way to tell VB.Net to use a type instead of a local property name when there is a naming conflict in your code?
Public Class MyClass
private mBedrag as single
Public Property bedrag() As Single
Get
[Code]...
I have classes structured like this:
[code....]
Is there a modifier I can use on property X in class D which will cause X to be returned as B from an instance of D and A from an instance of D that is evaluated as C?
[code...]
I was wondering if I can use an ArrayList inside a structure as one of the structure's properties.Or it may be better to replace the structure with a class. If so, can I use an ArrayList as a property of the class.So what I want to do is have the ArrayList as the property of the structure and be able to add items to the ArrayList and clear the ArrayList from a clear method of the structure.
i.e.,
structure.ArrayList.Add (item)
structure.Clear
[code].....
I think it's substituable for just Dim, Public or others. What is merit by using structure, property ??
View 1 Replies I am creating labels at runtime. Inside the .tag property I have a structure. Everytime I attempt to update the structure the .tag property doesn't update.
Here is the structure:
Public Structure structChip
Dim kingStatus As Boolean
Dim currentTileLoc As Integer
[Code]....
In a list(of structure), i constantly have to modifiy the property of items using this code
Private Sub ChangeState(ByVal ww As WebWorker, _
ByVal NewState As WorkerState)
Dim oWBB As WebWorker = ListWebWorkers.Find(Function(item As WebWorker) item.Browser.Name.ToLower = [code].....
But this give problem when two or more of the items call this sub procedure. in that one item may already have been removed. This code is executed in the ui thread, and has to be.so is there a better way to modify the items in list structure?
Am getting: "Structure cannot be indexed because it has no default property". What am I doing wrong?
With grid.Rows(10).Cells
Dim note As New Note With {.ID = "Blah", _
.Date = "1/1/2011", _
.Message = "AAA", _
[code]....
I have a very simple class that holds a few public properties - ID, Text, Colour, etc. and a Boolean called 'SelectedItem'. Just like the Checked property on RadioButtons, only one item can have its SelectedItem property set to True within a particular group. Note: there will be several separate groups (lists), each allowed to have only one item with SelectedItem = True.
My first thought was that I would probably just have to handle everything outside of the class, setting SelectedItem to False for every other item in a particular list when another item was selected. But that seems rather inelegant to me. So I've been trying to think of how this might be done within the class. For example: could I perhaps have a private string property called say "GroupName" - set in the New sub when adding a new instance of the class - and then use a private shared method to set every item's SelectedItem property to False, provided the item has the same GroupName as the newly selected item? I would have a go at doing this but I have no idea how to enumerate every instance of a class from within that class, or whether that's even possible. Is it? Or is there another (better) way to achieve my goal? Here is a cut-down version of what I've got so far:
Public Class ResourceItem
Public ID As Integer
Public Text As String[code]....
As can be seen: instead of instantiating a new ResourceItem and passing that as an argument to the manager's Add procedure, I'm simply passing the details of the new item and the procedure is creating the item from those. I don't know whether this is a good or bad idea - please advise - but I've done it because I couldn't figure out how to make the SelectedItem property only writeable by the manager, so I wanted to avoid having directly accessible objects that could have their SelectedItem property set to True without it deselecting all the other items in the same group. Of course that still leaves the possibility of setting a variable to one of the manager's list items and setting it from there, so I would still like to know how I could prevent that, if possible.
UPDATE: I didn't use the code above in the end, deciding instead to go with Cyborgx37's solution - which seems to work perfectly well for me despite the warnings about best practice. I also realised I would need to use the same class in another scenario where multiple items could be selected, so it was easy to add a Boolean property to the manager to enable that.
I have the following property in a property grid in VB.Net 2010.
<Description("Rapid Entry Post Car Wash Settings CarWashOptionPushButtons"), _
Category("Post Car Wash")> _
Public Property CarWashOptionPushButtons() As String
[code]....
I need to make this property a list box that gets the values from a database table and populates the list box with the values from the table. I have tried numerous things to no avail.
How would I make use of a List(of String) in a structure in vb.net. for example
Structure examplestrut
Public exampleslist As List(Of String)
End Structure
How would I call exampleslist.add("example 1")?
Is there any way to make an array structure a part of a condition?[code]...
View 9 Repliesi have a given table structure with some data inside. Here is the database model: Database Model..In the TBL_SCENARIO Table a user can store an unlimited number of scenarios. In the TBL_EVENTS can each scenario have an unlimited number of so called Events like risks.The TBL_EVENT_DATA Table stores now for each day and for each event in a scenario the value min and max.I would like to edit a scenario with its events (! not an single) in a GridView Control. Is this possible? I would like to have the rows as days and the columns (2columns for one event) as min max value for the events. So is it possibel, when i have 5 events, have these in 10 columns (2 columns for each event [min] and [max] and then the days as rows?
View 4 RepliesI have a table with a Int PK column and a name. I want to load them into an object of some sort and return them using Json() ActionResult in MVC 2. I am having a hard time finding a built-in structure that is supported for serialization that keeps a simple key/value structure in tact.
Ultimately I would like to do something like:
Function JsonList() As ActionResult
Dim Things = New Dictionary(Of Integer, String)
[code].....
Module Module1
Public Structure structure1
Public TRANS() As structure2
End Structure
Public Structure structure2
Public X() As Integer
End Structure
End Module
I'm new to VB 2008 after having spent a long time with VB6, so I apologize if this is a stupid question. But I'd really like to have this straightened out.
Let's say I have a pretty large structure that has lots of properties.
Code:
Now say that I want an internal database with about 10 instances of this structure total, describing, say, 10 different products that a store sells. When these values are loaded from a database, they remain totally static. (However, they can be different each time a program loads)
Now say that I have a class. Each instance of this class is a type of that BaseProduct structure. Meaning, each instance of the class pertains to one of the 10 types of products that the store sells. However, this class has additional properties that pertain specifically to each instance, which are not static.
Code:
Now, the problem here is... If I have 200 different transactions, each one contains an instance of BaseProduct. BaseProduct is HUGE, and is largely redundant (only 10 types possible), so I think it's a little silly to include a whole copy of it with EVERY transaction. However, the Transaction class really needs information regarding the base product it pertains to. Is there a way to, instead of declaring a New BaseProduct in the Transaction class, to simply make one of the properties of the Transaction class a pointer to a BaseProduct variable?
In VB6, I would accomplish this by making a BaseProduct(10) array, and then giving each Transaction an ID number referring to an entry in that array. But in VB 2008, using class structure, this is impossible. I can't define the BaseProduct(10) array outside of a class in a namespace, and if I define it in the actual application's form, then the class loses modularity since it relies on the application that's using it.
I am trying to communicate with an external device and i am trying to send a byte array to the external device via sockets but i am always getting a response the message size is too small so i am not sure what i have done wrong. Between the data type there should be no alignment present and all numbers are represented in little endian format. The char array is not null terminated as mentioned in the protocol specifications.
I have to send data based on a struct that embeds 2 other struct. So here's my vb.net code for the struct used to convert to byte array and the sending part.
Public Structure MESSAGETYPE_OIP_Login
Dim Header() As COMMANDHEADER
Dim UserName() As PSTRING
[Code]....
I'm experiencing a problem with the following c-structure:
typedef struct tagTEXTUREPROP
{
DWORD dwSize;
[Code].....
The Marshal.SizeOf obviously calculates a size of 76 and it works with the DLL function, but it leaves me with some bad feelings.
I'm having a problem that's driving me crazy; I can't understand how to convert the XML structure into a class structure (that I want to use to hydrate a XML document).
The XML document looks like this:
xml
<?xml version="1.0" encoding="utf-8"?>
<artists xmlns:opensearch="http://a9.com/-/spec/opensearch/1.1/" xmlns="http://www.spotify.com/ns/music/1">
[code]....
I have a class which contains the object and a collection for that object. I want to make a property readonly to external calls, but allow access to that property from the collection class. I know I can use:[code]But, I want to the PreviousRow property to actually show as "ReadOnly" in the intelisense of the calling code of client app. The above does not. The only way that I see to make it show as "ReadOnly" in the called code is to mark the whole property as ReadOnly, but the problem with this is that my collection class code can no longer access this property:[code]I tried using the "Friend" declaration, but that seems to still allow Write access to the calling code.I only want write access from within the RowCollection class.
View 9 RepliesIs there a tab property I can assign to make a given tab not only the "top" (or active) tab but also the left most or is there another way to do this?(It seems pretty straight forward to make a tab the top or active tab.)The requirement is that I've got one tabcontrol that contains a potentially large number of tabs. Each member tab has a right fair number of controls and dialogs.These tabs are all grouped by fours sequentially. For example, tabs 0-3 are one group, 4-7 the next group, etc.I'd like to control the display of this tabcontrol from a different tab control. This second tab control contains high level information about the 1st tab control as well as a lot of other things pertaining to all four tabs that the user needs to see as well.For example, if I've got 8 total Tab1's, then I've got 2 Tab2's.When Tab2(0) is selected, I'd like Tab1's leftmost item to be Tab1(0). When Tab2(1) is selected, I'd like Tab1(4) to be my leftmost tab in Tab1, rotating the lower 4 out of view for the time being.
View 4 Repliesthis is the code for my property
Dim _playernumber As Integer
Property Player() As Integer
Get
[code].....
Imports Microsoft.VisualBasic
Public Class DealSlot
Private mSlotType As String
[Code]...
I have a situation where a class's properties are being exported/imported from an Excel sheet. Each property is in a specific column, so I want to make a mapping between each property and column # (a Dictionary collection would be sufficient). That way I can just loop through each property and/or column in the dictionary when read/writing data (maybe something like Class1.PropertyA = ws.Cells(curRow, Propto ColDictionary(PropertyA???).value). But, you obviously can't treat properties like other value types, so I don't know how I would store a property in a dictionary for this purpose. So could this sort of thing be achieved via reflection, or am I off-track?
View 8 RepliesI just stumbled over this in some C# code...:public Foo Foo { get; private set; }
View 2 RepliesI want to make something similar to the listbox.children property. I know I can write this to return the children of the listbox:
[Code]...
How do I make a property to have a set of selectable values, in a way such that they work by intellisense-drop-down, as i.e. the color.white, color.black etc.? I want to do this like for integer values I may want to have selectable by "keywords" with the hard values only existing in a unique class file, or whatever is necessary ..?
View 2 RepliesI'm in the process of making a usercontrol and i've run into the problem of how to make a property page. Obviously this makes setting up you control nicer and more importantly to my program makes loading the form faster (setting the properties in the load event vs property page). I was trying to find something to start on but i didn't find a propety page in the "New Item" menu or even something like the "Property Pages" property of a usercontrol in vb6 where i've done this before. How can i make the equivalent of the vb6 property page in vb.net? Maybe with a form or a dialog?
View 6 RepliesI want to make a structure within a structure. Basically it will appear like this:
Structure ID
dim CardType as string
im CardCode as string
[code]......
In Vb.net I am trying to assign an array of structure to another array of same structure[code]...
View 2 RepliesPublic Class Customer
Private m_CID As Integer
Private m_FirstName As String
[Code].....
My question is that do I need to add an OID in customer class or I can directly send a query to customer table when ever an order is made.